Upon the failure, neglect or refusal of any owner or agent so notified, to properly dispose of litter dangerous to the public health, safety or welfare within five days after receipt of written notice provided for herein or within five days after the date of such notice in the event the same is returned to the city by the Post Office Department because of its inability to make delivery thereof, provided the same was properly addressed to the last known address of such owner, or agent, the city is hereby authorized and empowered to pay for the disposing of such litter, or to order its disposal by the city.
(1991 Code, § 6.72)